Who said "There's nothing else anywhere except this."?

This quote is attributed to Don Draper.

There's nothing else anywhere except this. - Don Draper

"There's nothing else anywhere except this."

Don Draper Solitude

"I am the sum of all my experiences."

"What you call love was invented by guys like me to sell nylons."

"If you don't like what's being said, change the conversation."

"Happiness is the smell of a new car."

"Sometimes being the best means being the loneliest."

"Solitude gives us time to reflect on what matters"

"I'm not good with people, never have been."

"I feel like I'm disappearing."